Advanced stainless steel refining process based on slag-metal counterflow operation

1999 ◽  
Vol 96 (1) ◽  
pp. 27-34
Author(s):  
M. Miyata ◽  
Y. Higuchi ◽  
I. Minoru ◽  
S. Fukagawa ◽  
T. Matsuo
Keyword(s):  
Stainless Steel ◽  
Refining Process ◽  
Steel Refining

Simulation of Steel Refining Process in Converter

2010 ◽  
Vol 81 (8) ◽  
pp. 617-622 ◽  
Author(s):  
F. Pahlevani ◽  
S. Kitamura ◽  
H. Shibata ◽  
N. Maruoka
Keyword(s):  
Refining Process ◽  
Steel Refining

Effect of calcium content on inclusions during the ladle furnace refining process of AISI 321 stainless steel

2020 ◽  
Vol 27 (11) ◽  
pp. 1499-1507
Author(s):  
Chao Pan ◽  
Xiao-jun Hu ◽  
Jian-chao Zheng ◽  
Ping Lin ◽  
Kuo-chih Chou
Keyword(s):  
Stainless Steel ◽  
Calcium Content ◽  
Refining Process ◽  
Ladle Furnace ◽  
Aisi 321

Inclusions evolution during the LF refining process of 439 ultra-pure ferritic stainless steel

2019 ◽  
Vol 116 (6) ◽  
pp. 619
Author(s):  
Xingrun Chen ◽  
Guoguang Cheng ◽  
Yuyang Hou ◽  
Jingyu Li
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Refining Process ◽  
Stable Phase ◽  
X Ray ◽  
Titanium Aluminum ◽  
Reasonable Range ◽  
Ti Addition ◽  
Automatic Scanning ◽  
Lf Refining

The morphology, composition, size, and number of inclusions in 439 ultra-pure ferritic stainless steel samples were analyzed using an automatic scanning electron microscope combined with an energy-dispersive X-ray spectrometer. In addition, the appropriate contents of titanium, aluminum, and calcium were analyzed through the coupling of thermodynamics calculation and experimental results. CaO-Al2O3-MgO inclusions existed in the 439 steel before Ti additions in the ladle furnace (LF) refining process. After Ti addition in the LF refining process, the inclusions were transformed into CaO-Al2O3-MgO-TiOx inclusions. The evolution of these inclusions was consistent with thermodynamic calculation, which indicated that when the Al, Ca, and Ti contents were within a reasonable range, Ca treatment could significantly modify the aluminate and spinel to form CaO-Al2O3-MgO liquid inclusions. In addition, the compositions of inclusions after the addition of titanium were mostly located in the Al2O3-TiOx stable phase. The collision of the CaO-Al2O3-MgO liquid inclusions and Al2O3-TiOx inclusions resulted in the modification of the CaO-Al2O3-MgO-TiOx inclusions. The compositions of most inclusions were located in the liquid zone. The control range of the aluminum, calcium, and titanium contents was obtained: logAl% ≥ 1.481logTi% − 0.7166, Ca% ≥ 34.926(Al%)3 − 3.3056(Al%)2 + 0.1112(Al%) − 0.0003.

Research on Technology of Smelting Low-Sulphur Steel

2012 ◽  
Vol 581-582 ◽  
pp. 899-903
Author(s):  
Long Kui Jiang
Keyword(s):  
Molten Steel ◽  
Refining Process ◽  
Sulphur Content ◽  
Converter Steelmaking ◽  
Hot Metal ◽  
Steel Smelting ◽  
Steel Refining

Based on feature of low-sulphur steel smelting in PanGang, in terms of optimizing desulfurization technology, reducing resulfurization in converter steelmaking, optimizing desulfurization in LF molten steel refining process and developing RH molten steel refining desulfurization technology. The sulphur content of hot metal can be controlled no more than 0.003%, and that of terminal molten steel can also be controlled no more than 0.005%, which makes the production of low-sulphur steel come true, and the technology route of such steel smelting be established.

scholarly journals Improvement of Refining Process of Stainless Steel

DENKI-SEIKO ◽  
2005 ◽  
Vol 76 (1) ◽  
pp. 63-69
Author(s):  
Takahiro Ogawa ◽  
Takaaki Taketsuru
Keyword(s):  
Stainless Steel ◽  
Refining Process
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